import { constantRoutes } from '@/router'
import Layout from '@/layout/index'
import ParentView from '@/components/ParentView'
import InnerLink from '@/layout/components/InnerLink'
import systemRoutes from "../../router/modules/systemRoutes";
import {getResources} from "../../api/ac/ac";

// 匹配views里面所有的.vue文件
const modules = import.meta.glob('./../../views/**/*.vue')

const usePermissionStore = defineStore(
  'permission',
  {
    state: () => ({
      routes: [],
      addRoutes: [],
      defaultRoutes: [],
      topbarRouters: [],
      sidebarRouters: []
    }),
    actions: {
      setRoutes(routes) {
        this.addRoutes = routes
        this.routes = constantRoutes.concat(routes)
      },
      setDefaultRoutes(routes) {
        this.defaultRoutes = constantRoutes.concat(routes)
      },
      setTopbarRoutes(routes) {
        this.topbarRouters = routes
      },
      setSidebarRouters(routes) {
        this.sidebarRouters = routes
      },
      generateRoutes(roles) {
        return new Promise(resolve => {
          // 向后端请求路由数据
          getResources().then(res => {
            let data = filterRouter(res.ds)

            const sdata = JSON.parse(JSON.stringify(data))
            const rdata = JSON.parse(JSON.stringify(data))
            const defaultData = JSON.parse(JSON.stringify(data))
            // const sdata = systemRoutes
            // const rdata = systemRoutes
            // const defaultData = systemRoutes

            const sidebarRoutes = filterAsyncRouter(sdata)
            const rewriteRoutes = filterAsyncRouter(rdata, false, true)
            const defaultRoutes = filterAsyncRouter(defaultData)

            // const sidebarRoutes = filterRouter(sdata)
            // const rewriteRoutes = filterRouter(rdata)
            // const defaultRoutes = filterRouter(defaultData)
            // const sidebarRoutes = systemRoutes
            // const rewriteRoutes = systemRoutes
            // const defaultRoutes = systemRoutes

            this.setRoutes(rewriteRoutes)
            this.setSidebarRouters(constantRoutes.concat(sidebarRoutes))
            this.setDefaultRoutes(sidebarRoutes)
            this.setTopbarRoutes(defaultRoutes)
            resolve(rewriteRoutes)
          })
        })
      }
    }
  })

function checkRoute(routeList, resourceMap) {
  return routeList.filter(route => {
    if(route.children !== undefined && route.children.length > 0) {
      let children = checkRoute(route.children, resourceMap);
      if(children.length === 0) {
        return false
      }else {
        route.children = checkRoute(route.children, resourceMap);
      }
    }else {
      if(resourceMap.get(route.name) === undefined) {
        return false
      }
    }
    return true
  })
}
// 遍历后台传来的资源，转换为路由对象
function filterRouter(resources) {
  let resourceMap = new Map();
  resources.forEach(function (resource){
    resourceMap.set(resource.permission,resource.permission);
  })
  return checkRoute(systemRoutes, resourceMap);
}


// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap, lastRouter = false, type = false) {
  return asyncRouterMap.filter(route => {
    if (type && route.children) {
      route.children = filterChildren(route.children)
    }
    if (route.component) {
      // Layout ParentView 组件特殊处理
      if (route.component === 'Layout') {
        route.component = Layout
      } else if (route.component === 'ParentView') {
        route.component = ParentView
      } else if (route.component === 'InnerLink') {
        route.component = InnerLink
      } else {
        route.component = loadView(route.component)
      }
    }
    if (route.children != null && route.children && route.children.length) {
      route.children = filterAsyncRouter(route.children, route, type)
    } else {
      delete route['children']
      delete route['redirect']
    }
    return true
  })
}

function filterChildren(childrenMap, lastRouter = false) {
  var children = []
  childrenMap.forEach((el, index) => {
    if (el.children && el.children.length) {
      if (el.component === 'ParentView' && !lastRouter) {
        el.children.forEach(c => {
          c.path = el.path + '/' + c.path
          if (c.children && c.children.length) {
            children = children.concat(filterChildren(c.children, c))
            return
          }
          children.push(c)
        })
        return
      }
    }
    if (lastRouter) {
      el.path = lastRouter.path + '/' + el.path
    }
    children = children.concat(el)
  })
  return children
}

export const loadView = (view) => {
  let res;
  for (const path in modules) {
    const dir = path.split('views/')[1].split('.vue')[0];
    if (dir === view) {
      res = () => modules[path]();
    }
  }
  return res;
}

export default usePermissionStore
